Home / 12,144.54-18,221.40-4,754.28

Finding the Fourth Proportional to 12,144.54, 18,221.40 and 4,754.28

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Solution

The fourth proportional to 12,144.54, 18,221.40 and 4,754.28 is: 7,133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.54 : 18,221.40 = 4,754.28 : x
  2. Step 2: Convert to fraction form
    12,144.54/18,221.40 = 4,754.28/x
  3. Step 3: Cross multiply
    12,144.54x = 18,221.40 × 4,754.28
  4. Step 4: Simplify right side
    12,144.54x = 86,629,637.59
  5. Step 5: Solve for x
    x = 86,629,637.59/12,144.54
  6. Step 6: Final answer
    x = 7,133.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.